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nickc(at)mtaonline.net
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 Posted: Sun Nov 02, 2008 9:07 am Post subject: Looking for input on Kolbra...flap, wing, leading edge... |
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Hello Folks,
I am Nick Cassara, in Palmer, Alaska. I bought the “prototype” Kolbra fuselage and wing kit that Jim Kmet was selling. Jim was kind enough to return everything to Kolb for me.
Travis and crew went through and inventoried the kit, power coated some parts, and add few things and ship it a North to Alaska! Travis could not have been more patient, understanding and Helpful! I hope someday to visit Kolb.
I am a student LSA pilot. I have over a thousand hours in the back seat of a supercub, doing wildlife surveys…not flying. I also work out of R-44’s and C-185’s, but I mostly know cubs, and cup pilots and P. A.”s.
I plan to add flaps to my wings, build the wing out so it flies to the end, and add 1/16” aluminum sheeting to the front of the wing, forcing all air to flow over the top ribs and support the fabric on the leading edge from contacting brush on the ground. VG’s will also be on.
I know that most of you folks will have some input on these changes…I have seen the photos of Miss Dixie, what a plane… but have been unable to contact Paul…Mike Welsh is going to send pictures of his wing mods…please give me your input .
Thanks, Nick up North
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NeilsenRM(at)comcast.net
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| Posted: Sun Nov 02, 2008 10:01 am Post subject: Looking for input on Kolbra...flap, wing, leading edge... |
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Nick
I don't have a Kolbra but I built and have flown a MKIIIC for a number of years and the MKIII has the same wing. I'm not sure I understand exactly what you are planning to do to that wing but these are my thoughts and they are worth what you paid for them.
Flaps are well worth putting on your plane. The benefit to landing is nothing short of incredible. Be vary careful using full flaps. I wouldn't even consider using them at the max till you are very familiar with the plane. If you build them with more notches or electric where you can work into full flaps gradually that would be even better VGs will help also.
A number of people have put aluminum on the leading edge of the wing and have only had reduced performance due to the increased weight. If you are doing this for protection from brush that's fine but that is all it will do.
I'm don't know what "build the wing out so it flies to the end" means. If you are talking about different wing tips you might want to look at the new MKIIIX wing tips. I understand they work well. Wing tips are a bit of black science and not very many custom wing tips help and most make things worse.
Rick Neilsen
Redrive VW powered MKIIIC
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slyck(at)frontiernet.net
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| Posted: Sun Nov 02, 2008 11:32 am Post subject: Looking for input on Kolbra...flap, wing, leading edge... |
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Nick, Rick N is correct on all counts. More info on leading edge tin:for performance the unadorned stock Kolb leading edge probably has the best lift characteristics
because the valleys help keep the airflow linear and attached. I wouldn't have put it on my left wing
except for the fact that the already built right wing had it under a perfectly good cover.
I can say that it doesn't add enough weight to be a factor and the wing is more rash-resistant.
Use real T-6 aircraft aluminum, not roofing flashing.
I pre-bent it at the front to take out the fight and attached it from the leading edge tube (fabric rivets to reduce the bumps)
to the area over the spar. Internally a bead of clear silicone sealer alongside all the ribs keeps everything
snug.
BB
On 2, Nov 2008, at 12:07 PM, Nick Cassara wrote:
| Quote: | Hello Folks,
I am Nick Cassara, in Palmer, Alaska. I bought the “prototype” Kolbra fuselage and wing kit that Jim Kmet was selling. Jim was kind enough to return everything to Kolb for me.
Travis and crew went through and inventoried the kit, power coated some parts, and add few things and ship it a North to Alaska! Travis could not have been more patient, understanding and Helpful! I hope someday to visit Kolb.
I am a student LSA pilot. I have over a thousand hours in the back seat of a supercub, doing wildlife surveys…not flying. I also work out of R-44’s and C-185’s, but I mostly know cubs, and cup pilots and P. A.”s.
I plan to add flaps to my wings, build the wing out so it flies to the end, and add 1/16” aluminum sheeting to the front of the wing, forcing all air to flow over the top ribs and support the fabric on the leading edge from contacting brush on the ground. VG’s will also be on.
I know that most of you folks will have some input on these changes…I have seen the photos of Miss Dixie, what a plane… but have been unable to contact Paul…Mike Welsh is going to send pictures of his wing mods…please give me your input .
Thanks, Nick up North
| Quote: | http://www.matronics.com/contribution
style="color: blue; text-decoration: underline; ">http://www.matronics.com/Navigator?Kolb-List
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Sun Nov 02, 2008 6:11 pm Post subject: Re: Looking for input on Kolbra...flap, wing, leading edge.. |
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Howdy:
Probably the high time Kolbra, until it crashed last May, with over 1600 hours, was John Williamson's.
Probably the high time mkIII with 2,800+ hours, is mine.
Neither John W or I saw a requirement to change Homer Kolb's wing. John W., like myself, did a lot of long cross country flying in all kinds of winds and weather.
I feel obligated to voice my opinion, especialy when it comes to one inexperienced Kolb builder/pilot, following suit with modifications made by other inexperienced Kolb buider/pilots. For my own Kolbs, nothing was ever changed from the original plans until I had sufficient time flying and testing the aircraft to determine if I "really" needed to make a change. Making changes for changes sake might get you hurt, or worse.
How do you know what you need if you have no experience flying a Kolb model?
john h
mkIII
hauck's holler remote, Morgan Hill, California
PS: My lap top went tits up the day I left Alabama, a month ago. Internet is far and few between for me. ;-(
| | - The Matronics Kolb-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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